When and if the People of Georgia v. Justin Ross Harris gets underway in Marietta, there are some key players that you need to know about and that’s just before the opening arguments are even started. Those opening arguments will not take place in Marietta, thanks to a change of venue, right as voir dire (jury selection) was about to wrap up.

As someone once said, you can’t tell the players without a program and there are principals in this little drama, so to speak. So thanks to the Atlanta Journal Constition, here are the key players in what some are calling the biggest trial since Casey Anthony.

The defendant, Justin Ross Harris. Until now, he had never been in any legal trouble until the former 911 dispatcher and Univeristy of Alabama graduate alledgedly left his infant son Cooper in a hot car in June 2014. He worked as a web developer for Atlanta-based Home Depot until he was arrested for the death of the child in 2014. Cobb County Prosecutor Vic Reynolds contends that he had a desire to shed the responsibilties of being married and having a child.

Leanna Taylor (Harris). Although she filed for divorce from Harris in March and has now gone back to her maiden name, she believes that the death of her son was an accident. They met on a blind date and Harris told friends that he was “going to marry that girl,” which he did in 2006. The couple moved to Marietta in 2012 and gave birth to Cooper afterward. Despite details of his extramarital affairs, she chose to stand by her husband and remains convienced that her son’s death was a horrible accident.

Maddox Kilgore: Harris’s lead defense attorney knows the lay of the legal landscape in Cobb County, since he also once worked as a prosecutor in the Cobb district attorney’s office. Early in his career, Kilgore worked in the criminal division of the state attorney general’s office, representing the state in criminal appeals. “I got to go to state prisons all over the state, up in the mountains, down in the swamps. If someone was trying to get out of jail on a technicality, I had to keep him in,” he said during a recent talk at Kennesaw State University. He then prosecuted felony cases in the Cobb District Attorney’s office for six years before moving over to the defense bar in 2005. In his KSU talk, Kilgore described his defense work as an honor and “incredibly rewarding.”

Vic Reynolds: The prosecution of Ross Harris stands as the biggest trial of Reynolds’ brief tenure as Cobb’s district attorney. Cobb’s answer to Jack McCoy of “Law & Order,” the Rome, Georgia native wore a badge in Rome for four years after he graduated from college. Three decades ago, he moved to Cobb, finished law school and worked in civil litigation before signing on as a prosecutor in neighboring Fulton County. He then moved to the Cobb DA’s office, later served as a judge and also practiced for several years as a defense attorney before he was elected DA in 2012. His clients included Lynn Turner, the infamous Black Widow killer who was convicted of poisoning her two husbands with antifreeze (Turner would later kill herself in prison).

Chuck Boring: The senior assistant district attorney in Cobb heads the prosecution team in the Harris case. Boring has been a prosecutor for 15 years, focusing on crimes against children. He was raised in Griffin and began practicing law as a prosecutor in Coweta County, first moving to the Fulton County DA’s office and then to Cobb. He now heads the Cobb DA’s Special Victims Unit (a male version of Olivia Benson, if you will). Said DA Reynolds: “Any time there is a case involving a child victim it goes through Chuck’s unit. … So in looking at this particular case and obviously having a child victim, I made the decision to put Chuck as point on the case. So he’ll be trying the majority of the actual trial.”

Phil Stoddard: The Cobb County police detective is the lead investigator in the Harris case. He has been a critically important witness for the prosecution in multiple pretrial hearings and because of that testimony, is also expected to emerge as a key component of the defense’s case. Harris’s lawyers say he focused on Harris from the beginning, going so far as to exaggerate or even fabricate testimony implicating the defendant in his son’s death. He joined the Cobb Police Department in 2007 after six years with Atlanta police and had worked in the CCPD’s crimes against persons unit for about seven months when he caught the Harris case.

Mary Staley: The Cobb Superior Court judge will preside over the trial of Ross Harris. Staley is a former assistant district attorney in Cobb who is widely viewed as one of the most prosecutor-friendly judges in metro Atlanta. She was elected to the bench in 1992 and is up for re-election this year.

So there are the players. Take notes. There’s going to be a quiz afterward and that will take place when this trial gets underway. As for the where, we’re still waiting.